简要介绍了相干体技术和细线化技术。
In this paper, the coherence cube technology and graph thinning technology of image processing are introduced.
其一是图像预处理方法不当，在字符切分、大小归一化、倾斜校正以及签名图像的细线化时会丢失签名特征。
The first one is improper image pre-processing, such as segmentation, normalization and thinning, which lose the features of letters relationship and strokes.
指纹预处理一般包括以下几个步骤：图像质量评估、均值滤波、灰度归一化、灰度均衡化、方向滤波、二值化以及细线化。
Image preprocessing is usually consisted of following steps: quality assessment, mean filtering, gray normalization, gray equalization, the Oriental filtering, binarization as well as thinning.
本实用新型是由电动走带式柔性负电极辅以细线状正电极形成一个正离子小型化静电场。
The utility model relates to a miniaturized positive ion electrostatic field formed by an electric traveling band type flexible negative electrode and an auxiliary thin wire type positive electrode.
国外已经有商品化SECM仪器，但价格非常昂贵，而且不提供任何详细线路图，目前国内尚无生产此类仪器。
Presently commodity of SECM has been produced abroad, and it is very expensive. There isn't apparatus of SECM in China.
国外已经有商品化SECM仪器，但价格非常昂贵，而且不提供任何详细线路图，目前国内尚无生产此类仪器。
Presently commodity of SECM has been produced abroad, and it is very expensive. There isn't apparatus of SECM in China.
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